<!doctype html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, initial-scale=1">
		<title>Template • TodoMVC</title>
		<link rel="stylesheet" href="node_modules/todomvc-common/base.css">
		<link rel="stylesheet" href="node_modules/todomvc-app-css/index.css">
		<!-- CSS overrides - remove if you don't need it -->
		<link rel="stylesheet" href="css/app.css">
	</head>
	<body>
		<section class="todoapp" id="todoapp">
			<header class="header">
				<h1>todos</h1>
				<!--添加任务, keyup.enter 回车键监听-->
<!--				<input class="new-todo" placeholder="What needs to be done?" autofocus>-->
				<input @keyup.enter="addItem"
						class="new-todo" placeholder="What needs to be done?" autofocus>
			</header>
			<!-- This section should be hidden by default and shown when there are todos -->

			<!-- items.length 值为 0 就是 false -->
<!--			<section class="main">-->
			<section class="main" v-show="items.length">
				<!-- 添加计算属性 toggleAll 双向绑定-->
<!--				<input id="toggle-all" class="toggle-all" type="checkbox">-->
				<input v-model="toggleAll" id="toggle-all" class="toggle-all" type="checkbox">
				<label for="toggle-all">Mark all as complete</label>
				<ul class="todo-list">
					<!-- These are here just to show the structure of the list items -->
					<!-- List items should get the class `editing` when editing and `completed` when marked as completed -->
					<!-- 三种状态：未完成（没有样式）、已完成（.completed ）、编辑中( .editing ) -->
<!--					<li class="completed">-->
					<!-- 修改: 1、v-for 迭代; 2、:class {key为class样式名: value为获取的数据true或false} -->
<!--					<li v-for="(item, index) in items" :key="item.id"-->
					<li v-for="(item, index) in filterItems" :key="item.id"
						:class="{completed: item.completed, editing: item === currentItem}">
						<div class="view">
							<!-- 修改：1、v-model 绑定状态值是否选中 -->
<!--							<input class="toggle" type="checkbox" checked>-->
							<input class="toggle" type="checkbox" v-model="item.completed">
							<!-- 修改：1、{{ content }} 显示内容 -->
<!--							<label>Taste JavaScript</label>-->
							<label @dblclick="toEdit(item)">{{item.content}}</label>
							<!--修改: 1、:value 绑定id删除 -->
<!--							<button class="destroy"></button>-->
							<button class="destroy" :value="item.id" @click="removeItem(index)"></button>
						</div>
<!--						<input class="edit" value="Create a TodoMVC template">-->
						<!-- 通过 $event 变量获取当前输入框的值 -->
						<input class="edit" :value="item.content" @keyup.esc="cancelEdit"
							   @keyup.enter="finishEdit($event, item, index)"
							   @blur="finishEdit($event, item, index)">
					</li>
				</ul>
			</section>
			<!-- This footer should hidden by default and shown when there are todos -->

			<!-- items.length 值为 0 就是 false -->
<!--			<footer class="footer">-->
			<footer class="footer" v-show="items.length">
				<!-- This should be `0 items left` by default -->
				<span class="todo-count">
<!--					<strong>0</strong>-->
					<strong>{{remaining}}</strong>
					item left{{remaining <= 1? '': 's'}}
				</span>
				<!-- Remove this if you don't implement routing -->
				<ul class="filters">
					<li>
<!--						<a class="selected" href="#/">All</a>-->
						<a :class="{selected: filterStatus === 'all'}" href="#/">All</a>
					</li>
					<li>
						<a :class="{selected: filterStatus === 'active'}" href="#/active">Active</a>
					</li>
					<li>
						<a :class="{selected: filterStatus === 'completed'}" href="#/completed">Completed</a>
					</li>
				</ul>
				<!-- Hidden if no completed items are left ↓ -->
<!--				<button class="clear-completed">Clear completed</button>-->
				<button @click="removeCompleted" v-show="items.length > remaining"
						class="clear-completed">Clear completed</button>
			</footer>
		</section>
		<footer class="info">
			<p>Double-click to edit a todo</p>
			<!-- Remove the below line ↓ -->
			<p>Template by <a href="http://sindresorhus.com">Sindre Sorhus</a></p>
			<!-- Change this out with your name and url ↓ -->
			<p>Created by <a href="http://todomvc.com">you</a></p>
			<p>Part of <a href="http://todomvc.com">TodoMVC</a></p>
		</footer>
		<!-- Scripts here. Don't remove ↓ -->
		<script src="node_modules/vue/dist/vue.js"></script>
		<script src="node_modules/todomvc-common/base.js"></script>
		<script src="js/app.js"></script>
	</body>
</html>
